CN204231154U - A kind of magnetic levitation switch magnetic resistance fly-wheel motor - Google Patents
A kind of magnetic levitation switch magnetic resistance fly-wheel motor Download PDFInfo
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- CN204231154U CN204231154U CN201420439716.7U CN201420439716U CN204231154U CN 204231154 U CN204231154 U CN 204231154U CN 201420439716 U CN201420439716 U CN 201420439716U CN 204231154 U CN204231154 U CN 204231154U
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Abstract
The utility model discloses a kind of magnetic levitation switch magnetic resistance fly-wheel motor, comprise internal stator, rotor and external stator, internal stator (6), rotor (4), external stator (1) are nested successively in concentric fashion, external stator (1) inwall arranges 12 torque poles (2) at equal intervals, torque pole (2) is wound with main winding (3); The outer wall of rotor (4) is equally spaced arranged 8 rotor with salient pole (5); The outer wall of internal stator (6) is arranged at equal intervals 4 suspension poles (7), suspension pole (7) are wound with levitation force winding (8).The utility model overcomes the problem that effectively can not produce suspending power when stator and rotor do not line up in conventional maglev switched reluctance machines, the decoupling effect of radial load and torque is good, promote radial load ability, levitation force winding only needs according to required radial suspension force and controls separately, on external stator, each phase main winding also only needs according to required electromagnetic torque and controls, be easy to control, control algolithm also more simply more easily realizes.
Description
Technical field
A kind of magnetic levitation switch magnetic resistance fly-wheel motor of the present utility model, belongs to electric machinery field.
Background technology
Along with power shortage and using energy source institute cause the sternness further of environmental problem, solar energy power generating and wind power generation are because of aboundresources, widely distributed, inexhaustible and obtain fast development.But solar energy power generating and the intrinsic intermittence of wind power generation and randomness can bring appreciable impact to the safe operation of electric power system, therefore advanced energy storage technology is studied particularly urgent, wherein flywheel energy storage have that long service life, energy storage density are high, environmentally safe and be easy to prevent overcharge and overdischarge problem, to series of advantages such as temperature-insensitives, be with a wide range of applications.
Magnetic suspension switched reluctance motor utilizes radial load to produce the radial suspension force needed for rotor radial suspension by motor winding, can large in reservation switched reluctance machines mechanical strength, fault-tolerant ability is strong, on the basis of operational efficiency and critical whirling speed advantages of higher, the frictional dissipation that further elimination mechanical bearing brings, and the problem such as the rotor deformation that causes of radial magnetic pull imbalance, and without the need to lubricating arrangement.With adopt compared with the switched reluctance machines that supports of magnetic bearing, using magnetic suspension switched reluctance motor as fly-wheel motor, effectively can reduce the volume and weight of fly wheel system, be particularly useful for flywheel inertia less, but to system bulk and the strict occasion of weight demands.
The simplex winding mixing stator magnetic suspension switched reluctance motor that Korea S scholar D.H.Lee and J.W.Ahn proposes, weakens coupling between suspending power and torque by arranging suspension pole and pole of rotation on stator respectively; The document " Design and analysis of double stator type bearingless switched reluctance motor " being published in " Transactions of the Korean Institute of Electrical Engineers " for 2011 proposes a kind of magnetic suspension switched reluctance motor of bimorph transducer type, initial analysis has been carried out by limited means, this motor main winding and levitation force winding are wound on external stator and internal stator respectively, the two magnetic flux path is separate, effectively can overcome the coupling influence between winding.
The document " design of complete period bearing-free bearingless switched reluctance generator " being published in " Proceedings of the CSEE " for 2011 discloses a kind of magnetic levitation switch magnetic resistance complete-period generator, the tradition limitation that periodically timesharing power generation mode power density is low can be made up, but there is serious non-linear close coupling problem between suspension in motor and electricity generation system.Application number to be the patent of invention " a kind of bearingless switched reluctance generator " of 201110313992.x and application number be 201210541096.3 patent of invention " a kind of stator hybrid short magnetic circuit magnetic suspension switch reluctance generator " all disclose a kind of bearingless switched reluctance generator mixing stator type, its stator adopts the mixed structure of wide-narrow pole, can weaken the coupling between generating pole and suspension pole, but exciting current still has larger impact to radial suspension.
Application number is that the patent of invention " bearing-free switch magnetic-resistance starting generator and control method " of 200510040266.X proposes a kind of bearing-free switch magnetic-resistance starting generator and control method, decrease the mechanical wear in switch magnetic-resistance starting/generator system, reduce noise of motor, but main winding and auxiliary winding lap wound simultaneously, there is complicated non-linear close coupling impact, and the effective working region of double winding checks and balance, limit the flexibility that control method is selected.Application number be 201310637999.6 patent of invention " a kind of Double-stator magnetic suspension switch reluctance starting/power generation machine " propose a kind of magnetic levitation switch magnetic resistance startup/generator of bimorph transducer type, effectively reduce the coupling influence of main winding and levitation force winding, and double winding works alone, add the flexibility of control, disclose the principle starting and generate electricity, namely carry out Generation Control according to power generation requirements after startup, switching repeatedly that is electronic and generating state cannot be realized.
Application number is a kind of simplex winding mixing external rotor magnetic suspension switched reluctance motor announced in the patent of invention of 201310652080.4, adopt the mixing outer-rotor structure of field spider and disc rotor, produce radial suspension force and electromagnetic torque by the differential excitation of diametrically stator winding simultaneously, still exist between radial suspension force with electromagnetic torque and be coupled, therefore the decoupling effect of radial load and torque is poor; Meanwhile, the two poles of the earth windings differential excitation simultaneously diametrically on stator, the two distributes according to required radial load and torque, and suspending power controls and direct torque pins down mutually; Further, disk external rotor part, by increasing the axial length of motor, causes motor volume to increase, and limits its critical maximum speed.
Utility model content
The purpose of this utility model is used in flywheel energy storage system by magnetic suspension switched reluctance motor, as the driving motor of flywheel.Overcome above-mentioned the deficiencies in the prior art, realize electronic/electricity generate function and the decoupling zero of radial suspension function, effectively reduce the volume of fly wheel system, the decoupling effect of radial load and torque is good simultaneously.
The technical solution of the utility model is: a kind of magnetic levitation switch magnetic resistance fly-wheel motor, comprise internal stator, rotor and external stator, internal stator, rotor, external stator are nested successively in concentric fashion, external stator inwall arranges 12 torque poles (main winding pole) at equal intervals, and (main winding pole) is wound with main winding in torque pole; The outer wall of rotor is equally spaced arranged 8 rotor with salient pole (rotor pole), be not wound with any winding; The outer wall of internal stator is arranged at equal intervals 4 suspension poles (levitation force winding pole), suspend extremely and be wound with levitation force winding.Main winding is responsible for producing electromagnetic torque; Levitation force winding is responsible for producing radial suspension force.
The main winding that torque is extremely gone up is responsible for needing according to control and producing electromagnetic torque.When torque is identical with the direction of flywheel turns, wheel energy-storage system is in charged state; When torque is contrary with flywheel turns direction, flywheel does retarded motion, and flywheel energy storage system is in discharge condition.System is at maximum speed ω
maxwith minimum speed ω
minbetween circular flow, the energy of Absorbable rod and release is
Four poles that the radial direction of main winding is vertically opposite are connected in series, and form A, B, C three-phase, and the power inverter of main winding adopts asymmetrical three-phase half-bridge power converter; The power inverter of internal stator adopts four phase asymmetrical half-bridge power inverters.
Asymmetrical three-phase half-bridge power converter comprises asymmetrical three-phase half-bridge topology circuit, the half-bridge topology circuit that asymmetrical three-phase half-bridge topology circuit comprises charging end electric capacity C1, discharge end electric capacity C2, discharge end inductance (L2), discharge end diode D8, switch terminals inductance L 1, power device, switching capacity C3, single-pole double-throw switch (SPDT) S and three group are in parallel;
Four phase asymmetrical half-bridge power inverters comprise four phase asymmetrical half-bridge topological circuits, and four phase asymmetrical half-bridge topological circuits comprise four groups of half-bridge topology circuit be in parallel and a shunt capacitance C11.
Half-bridge topology circuit comprises the first power switch pipe, the second power switch pipe, the first diode, the second diode and winding, the two ends of winding connect the emitter of the first power switch pipe and the collector electrode of the second power switch pipe respectively, the negative pole of the second diode connects the emitter of the first power switch pipe, positive pole connects the emitter of the second power switch pipe, the negative pole of the first diode connects the collector electrode of the first power switch pipe, and positive pole connects the collector electrode of the second power switch pipe.
Winding in the half-bridge topology circuit of asymmetrical three-phase half-bridge topology circuit is main winding, the particular circuit configurations of asymmetrical three-phase half-bridge topology circuit is: the collector electrode of first power switch pipe V1, V3, V5 of three groups of half-bridge topology circuit is connected, the emitter of second power switch pipe V4, V2, V6 of three groups of half-bridge topology circuit is connected, and the two ends of switching capacity C3 connect the collector electrode of first power switch pipe V1, V3, V5 and the emitter of second power switch pipe V4, V2, V6 respectively;
Power device is in parallel with discharge end diode D8 after connecting with discharge end electric capacity C2, one end of discharge end inductance L 2 connects discharge end electric capacity C2, three feelers connecting valve end inductance L 1, discharge end inductance L 2 and charging end electric capacity C1 respectively of single-pole double-throw switch (SPDT) S, switch terminals inductance L 1 connects the collector electrode of first power switch pipe V1, V3, V5, and charging end electric capacity C1 is connected in parallel between the both positive and negative polarity of charging end.
Winding in four groups of half-bridge topology circuit be in parallel in four phase asymmetrical half-bridge topological circuits is levitation force winding L
x1, L
y1, L
x2, L
y2, the particular circuit configurations of four phase asymmetrical half-bridge topological circuits is:
Levitation force winding L
x1, L
y1, L
x2, L
y2two ends connect the first power switch pipe V11 respectively, V12, V13, the emitter of V14 and the second power switch pipe V15, V16, V17, the collector electrode of V18, second diode D15, D16, D17, the negative pole of D18 connects the first power switch pipe V11, V12, V13, the emitter of V1, positive pole connects the second power switch pipe V15, V16, V17, the emitter of V18, first diode D11, D12, D13, the negative pole of D14 connects the first power switch pipe V11, V12, V13, the collector electrode of V14, positive pole connects the second power switch pipe V15, V12, V13, the collector electrode of V1,
The collector electrode of first power switch pipe V11, V12, V13, V14 of 4 groups of half-bridge topology circuit is connected, the emitter of second power switch pipe V15, V16, V17, V18 of 4 groups of half-bridge topology circuit is connected, and the two ends of shunt capacitance C11 connect the collector electrode of first power switch pipe V11, V12, V13, V14 and the emitter of second power switch pipe V15, V16, V17, V18 respectively.
Independent mutually between main winding and the magnetic flux path of levitation force winding.
The beneficial effects of the utility model are:
(1) electronic/electricity generate function and the decoupling zero of radial suspension function, and radial load capability improving
Main winding and levitation force winding have independently magnetic flux path, are conducive to the problem solving non-linear close coupling between suspending power and torque; Suspension pole keeps equaling the extremely wide of auxiliary winding pole with the area that aligns of rotor inner surface, radial suspension force does not affect by rotor position angle, the problem that effectively can not produce suspending power when stator and rotor do not line up in conventional maglev switched reluctance machines can be overcome, the decoupling effect of radial load and torque is good, promotes radial load ability.Main winding and levitation force winding have independently magnetic circuit, and suspending power does not affect by rotor position angle, effectively can solve the coupled problem between flywheel and rotor suspension function, and promote radial direction and float over ability.
(2) startup, generating and rotor radial is integrated with from suspending function, more compact structure.
By radial direction magnetic bearing Integration ofTechnology in switching magnetic-resistance fly-wheel motor, current collection moves, generate electricity and rotor radial from suspend function in one, taking over seamlessly of its electronic/generator operation state is controlled by main winding current, on the basis retaining switching magnetic-resistance fly-wheel motor and electromagnetic bearing supporting premium properties, the more compact structure of engine system can be made, effectively reduce the volume of fly wheel system, improve power density.
(3) internal stator in the application adopts 4 electrode structures, levitation force winding on internal stator 4 salient poles only needs according to required radial suspension force and controls separately, on external stator, each phase main winding also only needs according to required electromagnetic torque and controls, be easy to control, control algolithm also more simply more easily realizes; The conducting interval of main winding and levitation force winding does not exist and restricts each other, can strengthen the flexibility that winding conducting region is selected, and then is conducive to the flexibility improving Systematical control, optimization system performance.。
(4) bearing-free technology is applied to switching magnetic-resistance fly-wheel motor by the utility model, the radial load needed for radial suspension is produced by the levitation force winding of magnetic suspension switched reluctance motor, not only can give full play to its high-speed adaptability, its performance more can be made to obtain General Promotion: can be large in reservation switched reluctance machines mechanical strength, fault-tolerant ability is strong, on the basis of operational efficiency and critical whirling speed advantages of higher, the frictional dissipation that further elimination mechanical bearing brings, and the problem such as the rotor deformation that causes of radial magnetic pull imbalance and noise, and without the need to lubricating arrangement.
(5) the utility model and adopting compared with the switched reluctance machines that supports of magnetic bearing, effectively can reduce the volume and weight of fly wheel system, be particularly useful for some flywheel inertias less, but to system bulk and the strict occasion of weight demands.
Accompanying drawing explanation
Fig. 1 is the operation principle schematic diagram of the utility model flywheel energy storage system;
Fig. 2-1 is the side structure schematic diagram of the utility model magnetic levitation switch magnetic resistance fly-wheel motor;
Fig. 2-2a is the front view of the utility model magnetic levitation switch magnetic resistance fly-wheel motor;
Fig. 2-2b is the STRUCTURE DECOMPOSITION schematic diagram of the utility model magnetic levitation switch magnetic resistance fly-wheel motor;
Distribution of Magnetic Field figure when Fig. 3 is the main winding conducting of the utility model magnetic levitation switch magnetic resistance fly-wheel motor;
Distribution of Magnetic Field figure when Fig. 4 is the levitation force winding conducting of the utility model magnetic levitation switch magnetic resistance fly-wheel motor;
Fig. 5 is the asymmetrical three-phase half-bridge topology circuit of the main winding power inverter of the utility model magnetic levitation switch magnetic resistance fly-wheel motor;
Fig. 6 is four phase asymmetrical half-bridge topological circuits of the levitation force winding power inverter of the utility model magnetic levitation switch magnetic resistance fly-wheel motor;
Utility model Reference numeral: 1-external stator is unshakable in one's determination, 2-main winding pole, 3-main winding, 4-rotor, 5-rotor pole, 6-internal stator, 7-levitation force winding pole, 8-levitation force winding.L
ma, L
mb, L
mcrepresent the main winding that main winding extremely goes up A, B, C three-phase respectively; V1 ~ V2 is power switch pipe; D1 ~ D8 is diode; C1 ~ C2 is electric capacity; Shown discharge end inductance L 2, discharge end electric capacity C2, power switch pipe V7, diode D7 and discharge end diode D8 form Cuk converter; L
x1, L
y1, L
x2, L
y2represent suspension pole x respectively
1, y
1, x
2, y
2on levitation force winding; V11 ~ V18 is power switch pipe; D11 ~ D18 is diode; C11 is electric capacity.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
Figure 1 shows that the operation principle schematic diagram of the utility model magnetic levitation switch magnetic resistance fly-wheel motor system.When driving magnetic levitation switch magnetic resistance fly-wheel motor flywheel driven to accelerate to rotate by converters, power storage gets up with the form of mechanical energy by flywheel, and fly wheel system is in charge mode, and now motor is as motor running; When not needing for outwards powering, fly-wheel motor invariablenes turning speed, flywheel energy storage system is in Holdover mode, and now motor is standby; When needs outwards provide electric energy, flywheel generates electricity as the motor in prime mover dragging system of system due to inertia High Rotation Speed, the energy that generator sends is via output current of power converter and voltage, kinetic transformation is that electric energy is discharged by system, fly wheel system is in releases energy pattern, and now fly-wheel motor is as generator operation.
The structural representation of the utility model magnetic levitation switch magnetic resistance fly-wheel motor, front view and STRUCTURE DECOMPOSITION schematic diagram is respectively shown in Fig. 2-1, Fig. 2-2a, Fig. 2-2b, adopt three salient-pole structures of 12/8/4 pole nested, concentric, comprise internal stator 6, rotor 4 and external stator 1, internal stator 6, rotor 4, external stator 1 are nested successively in concentric fashion, external stator 1 inwall arranges 12 torque poles (main winding pole 2) at equal intervals, and torque pole (main winding pole) 2 is wound with main winding 3; The outer wall of rotor 4 is equally spaced arranged 8 rotor with salient pole (rotor pole) 5, be not wound with any winding; The outer wall of internal stator 6 is arranged at equal intervals 4 suspension poles (levitation force winding pole) 7, suspension pole 7 is wound with levitation force winding 8.Four poles that the radial direction of main winding is vertically opposite are connected in series, and form A, B, C three-phase, and the power inverter of main winding 3 adopts asymmetrical three-phase half-bridge power converter; The power inverter of internal stator 6 adopts four phase asymmetrical half-bridge power inverters.
Each torque pole 2 is provided with N
mcircle main winding 3, four radial vertically opposite pole serial connections, are divided into into A, B, C three-phase (only depict a phase in figure, omit all the other two-phases); Internal stator 6 is arranged eight suspension poles 7, each suspension pole 7 is provided with N
fcircle radial load winding (levitation force winding) 8, each levitation force winding 8 is not connected in series each other.
Levitation force winding 8 on suspension pole 7 is responsible for rotor suspension function, i in Fig. 2-1
x1and i
y1be respectively the levitation force winding electric current being positioned at x, y-axis positive direction; i
x2and i
y2be respectively the suspending windings electric current of x, y-axis negative direction.I
x1during conducting, produce x positive direction suspending power, otherwise, i
x2during conducting, produce x negative direction suspending power; i
y1during conducting, produce y positive direction suspending power, otherwise, i
y2during conducting, produce y negative direction suspending power.Can be synthesized the suspending power of any direction by control x direction and y direction suspending power, thus the rotor radial realized is from suspending function.By controlling levitation force winding current i
x1, i
x2, i
y1and i
y2generation can obtain required radial load.Due in rotor rotation process, suspension pole equals the extremely wide of suspension pole all the time with the area that aligns of rotor, and therefore radial load does not change with rotor position angle, can effectively improve radial suspension performance.The main winding that torque is extremely gone up is responsible for needing according to control and producing electromagnetic torque.I in figure
mafor the electric current of A phase main winding, the main winding of B phase and C phase lays respectively at distance A phase clockwise 1/3 and 2/3 place.By control A phase, B phase and C phase main winding current, required electromagnetic torque can be obtained.When the direction of torque and flywheel turns is equidirectional, flywheel accelerates; When torque is contrary with flywheel turns direction, flywheel deceleration.Fly wheel system is at maximum speed ω
maxwith minimum speed ω
minbetween circular flow, the energy that can absorb and discharge is
Independent mutually between the magnetic flux path of main winding 3 and levitation force winding 8; Fig. 3 is the magnetic circuit distribution map of the main winding of the utility model magnetic levitation switch magnetic resistance fly-wheel motor, can find out that magnetic flux that main winding 3 produces is without internal stator 6; Fig. 4 is the magnetic circuit distribution map of the levitation force winding of the utility model magnetic levitation switch magnetic resistance fly-wheel motor, can find out that magnetic flux that levitation force winding 8 produces is without external stator 1.Therefore main winding 3 and levitation force winding 8 have independently magnetic flux path.Can find out, the magnetic flux that main winding produces is without internal stator, the magnetic flux that levitation force winding produces is also without external stator, independent mutually between main winding and the magnetic flux path of levitation force winding, efficiently solves the close coupling problem in conventional maglev switched reluctance machines between winding.
Fig. 5 is the asymmetrical three-phase half-bridge topology circuit of the main winding power inverter of the utility model magnetic levitation switch magnetic resistance fly-wheel motor, wherein: L
ma, L
mb, L
mcrepresent the main winding that main winding extremely goes up A, B, C three-phase respectively; V1 ~ V2 is power switch pipe; D1 ~ D8 is diode; C1 ~ C2 is electric capacity; Shown discharge end inductance L 2, discharge end electric capacity C2, power switch pipe V7, diode D7 and discharge end diode D8 form Cuk converter; Asymmetrical three-phase half-bridge power converter comprises asymmetrical three-phase half-bridge topology circuit, the half-bridge topology circuit 11 that asymmetrical three-phase half-bridge topology circuit comprises charging end electric capacity C1, discharge end electric capacity C2, discharge end inductance L 2, discharge end diode D8, switch terminals inductance L 1, power device 10, switching capacity C3, single-pole double-throw switch (SPDT) S and three group are in parallel; Shown power device 10 comprises power switch pipe V7 and diode D7, the positive and negative end of D7 connects the emitter and collector of V7 respectively, and C2 one end connects D8 positive pole, and one end connects the collector electrode of V7, the negative pole of D8 connects the emitter of V7, and L2, C2, V7, D7 and D8 form Cuk converter.
Fig. 6 is four phase asymmetrical half-bridge topological circuits of the levitation force winding power inverter of the utility model magnetic levitation switch magnetic resistance fly-wheel motor, wherein: L
x1, L
y1, L
x2, L
y2represent suspension pole x respectively
1, y
1, x
2, levitation force winding on y2; V11 ~ V18 is power switch pipe; D11 ~ D18 is diode; C11 is electric capacity.Four phase asymmetrical half-bridge power inverters comprise four phase asymmetrical half-bridge topological circuits, and four phase asymmetrical half-bridge topological circuits comprise four groups of half-bridge topology circuit be in parallel 11 and a shunt capacitance C11.
As shown in the dotted line frame content of Fig. 6, half-bridge topology circuit 11 comprises the first power switch pipe V11, second power switch pipe V15, first diode D11, second diode D15 and winding, the two ends of winding connect the emitter of the first power switch pipe V11 and the collector electrode of the second power switch pipe V15 respectively, the negative pole of the second diode D15 connects the emitter of the first power switch pipe V11, positive pole connects the emitter of the second power switch pipe V15, the negative pole of the first diode D11 connects the collector electrode of the first power switch pipe V11, positive pole connects the collector electrode of the second power switch pipe V15.
As shown in Figure 5, the winding in 3 groups of half-bridge topology circuit of asymmetrical three-phase half-bridge topology circuit is main winding L
ma, L
mb, L
mcthe particular circuit configurations of asymmetrical three-phase half-bridge topology circuit is: the collector electrode of first power switch pipe V1, V3, V5 of three groups of half-bridge topology circuit 11 is connected, the emitter of second power switch pipe V4, V2, V6 of three groups of half-bridge topology circuit 11 is connected, and the two ends of switching capacity C3 connect the collector electrode of first power switch pipe V1, V3, V5 and the emitter of second power switch pipe V4, V2, V6 respectively;
Power device 10 is in parallel with discharge end diode D8 after connecting with discharge end electric capacity C2, one end of discharge end inductance L 2 connects discharge end electric capacity C2, three feelers connecting valve end inductance L 1, discharge end inductance L 2 and charging end electric capacity C1 respectively of single-pole double-throw switch (SPDT) S, switch terminals inductance L 1 connects the collector electrode of first power switch pipe V1, V3, V5, charging end electric capacity C1 is connected in parallel between the both positive and negative polarity of charging end, and such L2, C2, V7, D7 and D8 form Cuk converter.
As shown in Figure 6, the winding in four groups of half-bridge topology circuit 11 be in parallel in four phase asymmetrical half-bridge topological circuits is levitation force winding L
x1, L
y1, L
x2, L
y2, the particular circuit configurations of four phase asymmetrical half-bridge topological circuits is:
Levitation force winding L
x1, L
y1, L
x2, L
y2two ends connect the first power switch pipe V11 respectively, V12, V13, the emitter of V14 and the second power switch pipe V15, V16, V17, the collector electrode of V18, second diode D15, D16, D17, the negative pole of D18 connects the first power switch pipe V11, V12, V13, the emitter of V1, positive pole connects the second power switch pipe V15, V16, V17, the emitter of V18, first diode D11, D12, D13, the negative pole of D14 connects the first power switch pipe V11, V12, V13, the collector electrode of V14, positive pole connects the second power switch pipe V15, V12, V13, the collector electrode of V1,
The collector electrode of first power switch pipe V11, V12, V13, V14 of 4 groups of half-bridge topology circuit 11 is connected, the emitter of second power switch pipe V15, V16, V17, V18 of 4 groups of half-bridge topology circuit 11 is connected, and the two ends of shunt capacitance C11 connect the collector electrode of first power switch pipe V11, V12, V13, V14 and the emitter of second power switch pipe V15, V16, V17, V18 respectively.
The asymmetrical three-phase half-bridge topology circuit of the main winding power inverter of the utility model magnetic levitation switch magnetic resistance fly-wheel motor as shown in Figure 5.Adopt the form of this power inverter, the sense of current of main winding is fixing, can opening and shutoff by control switch pipe, regulates the size of main winding current.During the charge mode of flywheel energy storage system: flywheel energy storage system absorbs energy from external power source, this magnetic levitation switch magnetic resistance fly-wheel motor is driven to run with electronic acceleration mode by main winding power inverter, thus the electric energy of absorption is got up with the storage of the kinetic energy form of flywheel, now switch S gets to charging end.4 pole main winding serial connections of A phase, when upper pipe V1 and lower pipe V4 conducting simultaneously, produce A phase main winding current i as shown in the direction of arrow
ma.When V1 and V4 turns off simultaneously, by diode D1 and D4 conducting afterflow.The main winding power conversion circuit of B phase and C pole phase also has identical operation principle.Adopt the form of this power inverter, the sense of current of main winding is fixing, can opening and shutoff by control switch pipe, regulates the size of main winding current.
When the electric discharge mode of operation of flywheel energy storage system: flywheel energy storage system externally releases energy, this magnetic levitation switch magnetic resistance fly-wheel motor is driven to run with regenerative braking state by main winding power inverter, thus the kinetic energy of storage is outwards exported with electrical energy form, now switch S gets to discharge end.D1 ~ D6 forms the uncontrollable rectification circuit of three-phase, at a, b two ends output dc voltage U
ab.Due in flywheel discharge process, Speed of Reaction Wheels can reduce gradually, and the voltage only obtained by uncontrollable rectifier can decline thereupon and have very great fluctuation process, adopts Cuk converter to carry out buck control to discharge circuit for this reason.
Fig. 6 is four phase asymmetrical half-bridge topological circuits of the levitation force winding power inverter of the utility model magnetic levitation switch magnetic resistance fly-wheel motor.When upper pipe V11 and lower pipe V15 conducting simultaneously, produce x as shown in the direction of arrow
1the levitation force winding current i of pole
x1; When V11 and V15 turns off simultaneously, by diode VD11 and VD15 conducting afterflow; y
1, x
2, y
2the levitation force winding power conversion circuit of pole also has identical operation principle.The every phase main switch of this asymmetry half-bridge circuit and diode break-make simultaneously; Completely independent between each phase, the workplace while of can meeting heterogeneous; Total head controls phase winding electric current, and the back-pressure that switching tube and diode bear is machine phase voltages U
s, components and parts requirement of withstand voltage is lower; Turn off due to substep can be realized, be conducive to the control of noise of motor; Every pipe up and down mutually shares a control signal, convenient, flexible control.The levitation force winding power inverter of generator.
The above is only preferred implementation of the present utility model; be noted that for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (7)
1. a magnetic levitation switch magnetic resistance fly-wheel motor, comprise internal stator (6), rotor (4) and external stator (1), it is characterized in that: described internal stator (6), rotor (4), external stator (1) are nested successively in concentric fashion, described external stator (1) inwall arranges 12 torque poles (2) at equal intervals, and described torque pole (2) is wound with main winding (3); The outer wall of rotor (4) is equally spaced arranged 8 rotor with salient pole (5); The outer wall of internal stator (6) is arranged at equal intervals 4 suspension poles (7), described suspension pole (7) is wound with levitation force winding (8).
2. magnetic levitation switch magnetic resistance fly-wheel motor according to claim 1, it is characterized in that: four poles that the radial direction of described main winding (3) is vertically opposite are connected in series, form A, B, C three-phase, the power inverter of described main winding (3) adopts asymmetrical three-phase half-bridge power converter; The power inverter of described internal stator adopts four phase asymmetrical half-bridge power inverters.
3. magnetic levitation switch magnetic resistance fly-wheel motor according to claim 2, it is characterized in that: described asymmetrical three-phase half-bridge power converter comprises asymmetrical three-phase half-bridge topology circuit, described asymmetrical three-phase half-bridge topology circuit comprise charging end electric capacity C1, discharge end electric capacity C2, half-bridge topology circuit (11) that discharge end inductance L 2, discharge end diode D8, switch terminals inductance L 1, power device (10), switching capacity C3, single-pole double-throw switch (SPDT) S and three group are in parallel; Described power device (10) comprises power switch pipe V7 and diode D7, and described discharge end inductance L 2, discharge end electric capacity C2, power switch pipe V7, diode D7 and discharge end diode D8 form Cuk converter;
Described four phase asymmetrical half-bridge power inverters comprise four phase asymmetrical half-bridge topological circuits, and described four phase asymmetrical half-bridge topological circuits comprise four groups of half-bridge topology circuit (11) and a shunt capacitance C11 of being in parallel.
4. magnetic levitation switch magnetic resistance fly-wheel motor according to claim 3, it is characterized in that: described half-bridge topology circuit (11) comprises the first power switch pipe (V11), second power switch pipe (V15), first diode (D11), second diode (D15) and winding, the two ends of described winding connect the emitter of the first power switch pipe (V11) and the collector electrode of the second power switch pipe (V15) respectively, the negative pole of the second diode (D15) connects the emitter of the first power switch pipe (V11), positive pole connects the emitter of the second power switch pipe (V15), the negative pole of the first diode (D11) connects the collector electrode of the first power switch pipe (V11), positive pole connects the collector electrode of the second power switch pipe (V15).
5. magnetic levitation switch magnetic resistance fly-wheel motor according to claim 4, is characterized in that: the winding in three groups of half-bridge topology circuit (11) of described asymmetrical three-phase half-bridge topology circuit is respectively main winding L
ma, L
mb, L
mcthe particular circuit configurations of described asymmetrical three-phase half-bridge topology circuit is: the collector electrode of first power switch pipe V1, V3, V5 of three groups of half-bridge topology circuit (11) is connected, the emitter of second power switch pipe V4, V2, V6 of described three groups of half-bridge topology circuit (11) is connected, and the two ends of described switching capacity C3 connect the collector electrode of first power switch pipe V1, V3, V5 and the emitter of second power switch pipe V4, V2, V6 respectively;
Described power device (10) is in parallel with described discharge end diode D8 after connecting with discharge end electric capacity C2, one end of discharge end inductance L 2 connects discharge end electric capacity C2, three feelers connecting valve end inductance L 1, discharge end inductance L 2 and charging end electric capacity C1 respectively of single-pole double-throw switch (SPDT) S, switch terminals inductance L 1 connects the collector electrode of first power switch pipe V1, V3, V5, and charging end electric capacity C1 is connected in parallel between the both positive and negative polarity of charging end.
6. magnetic levitation switch magnetic resistance fly-wheel motor according to claim 4, is characterized in that: the winding of four groups of half-bridge topology circuit (11) in described four phase asymmetrical half-bridge topological circuits is respectively levitation force winding L
x1, L
y1, L
x2, L
y2, the particular circuit configurations of described four phase asymmetrical half-bridge topological circuits is:
The collector electrode of first power switch pipe V11, V12, V13, V14 of described four groups of half-bridge topology circuit (11) is connected, the emitter of second power switch pipe V15, V16, V17, V18 of described four groups of half-bridge topology circuit (11) is connected, and the two ends of described shunt capacitance C11 connect the collector electrode of first power switch pipe V11, V12, V13, V14 and the emitter of second power switch pipe V15, V16, V17, V18 respectively.
7. magnetic levitation switch magnetic resistance fly-wheel motor according to claim 1, is characterized in that: independent mutually between described main winding and the magnetic flux path of levitation force winding.
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| CN201420439716.7U CN204231154U (en) | 2014-08-05 | 2014-08-05 | A kind of magnetic levitation switch magnetic resistance fly-wheel motor |
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| CN104184286A (en) * | 2014-08-05 | 2014-12-03 | 南京工程学院 | Magnetic suspension switch magnetic resistance flywheel motor and control method |
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2014
- 2014-08-05 CN CN201420439716.7U patent/CN204231154U/en not_active Withdrawn - After Issue
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| CN104184286A (en) * | 2014-08-05 | 2014-12-03 | 南京工程学院 | Magnetic suspension switch magnetic resistance flywheel motor and control method |
| CN104184286B (en) * | 2014-08-05 | 2017-04-19 | 南京工程学院 | Magnetic suspension switch magnetic resistance flywheel motor and control method |
| CN105305751A (en) * | 2015-11-24 | 2016-02-03 | 江苏大学 | Five-phase bearing-free brushless DC motor with two stators |
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| CN108615724A (en) * | 2018-05-08 | 2018-10-02 | 西安交通大学 | A kind of micro- sense type IGBT parallel current-sharing structures |
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Granted publication date: 20150325 Effective date of abandoning: 20170419 |